Welcome to UMER

The University of Maryland Electron Ring

The University of Maryland Electron Ring (UMER) is a world-class research facility in beam and accelerator physics at the Institute for Research in Electronics and Applied Physics, on the University of Maryland, College Park campus. Using a scaled low-energy electron beam, UMER cleverly accesses the intense, high-brightness, regime of beam operation in accelerators, at a much lower cost than larger and more energetic machines. UMER therefore makes an ideal testbed for experimenting in pushing up the brightness of existing and future accelerators.